He's covered seven football World Cups, six Olympic Games and 15 Ryder Cups over the course of an all-encompassing 31-year career. This week, Getty Images photographer David Cannon will reach another impressive milestone as he racks up coverage of his 100th men's major golf tournament at the U.S. PGA Championship. It's been an incredible journey that has captured some of golf's most iconic moments. From Jack Nicklaus to Tom Watson and Tiger Woods to Rory McIlroy, Cannon has snapped them all as they strived for victory in the sport's most illustrious tournaments. We asked the English photographer to select and describe his favorite shots from his previous 99 golf majors.